OMAPL138如何在Linux下使用EDMA3驱动

yyj · 发表于 2018-1-30 11:01:43

本帖最后由 yyj 于 2018-1-30 11:01 编辑

[code]EDMA sample test application0 ?( U R+ {7 U' j$ ~$ j
/*5 I% z+ ]# M) @: x0 E# U
* edma_test.c% M# D2 ^3 ? T0 P3 ]7 w
*% E1 g) c7 J' H% O( _; O
* brief EDMA3 Test Application
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* This file contains EDMA3 Test code.
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*
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
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* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT5 W0 v J8 S, P' f. f; ?/ g9 ?% ^
* TO CHANGE.& n) F6 ?, W, Z
*
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/) u9 {& R( o: f- t* J K
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* This program is free software; you can redistribute it and/or" S3 y' ?1 ?, s$ F
* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation version 2.
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any: \- U8 ]. p7 t3 `, }8 Y. ?
* kind, whether express or implied; without even the implied warranty
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* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the1 |) B* K4 m4 ?) L/ T
* GNU General Public License for more details. \; x$ ?* ]' f) X f+ C( a
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/errno.h>! l7 [( ]# E# x+ Y/ Q- @
#include <linux/types.h>
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#include <linux/interrupt.h>1 `2 C8 @8 c1 z% y/ V- ?% c
#include <asm/io.h>! S, V; q' l. M5 k: j* M( u
#include <linux/moduleparam.h>
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#include <linux/sysctl.h>4 F/ J8 c5 G z- }6 z0 b" U
#include <linux/mm.h>7 G0 R* Z# z- y+ w% h
#include <linux/dma-mapping.h>
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#include <mach/memory.h>
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#include <mach/hardware.h>
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#include <mach/irqs.h>1 W: L; ]; i/ d# R% {
#include <asm/hardware/edma.h>: u+ L* H! m/ l4 t2 n: q/ t
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#undef EDMA3_DEBUG: n* F. { ?5 m/ F: k. L5 ?
/*#define EDMA3_DEBUG*/3 b4 t+ T$ O6 D/ f5 @( x
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#ifdef EDMA3_DEBUG4 g6 {$ f* R: i( N9 H" N
#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)9 t% z! J! E5 w% w' W* ^0 |
#define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__): c5 w9 z; T& |) G9 ]; G
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
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#else
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#define DMA_PRINTK( x... )( t. l c" o: q- r4 x1 A+ j
#define DMA_FN_IN
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#define DMA_FN_OUT$ f4 O0 D4 ]; } z ^1 W
#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)
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#define STATIC_SHIFT 37 Q1 v& Q; N$ X. n: s/ U- T
#define TCINTEN_SHIFT 20 d0 Z2 X6 I ^% g
#define ITCINTEN_SHIFT 21' H* o9 m9 i6 ?1 q) J/ J0 J8 F1 `
#define TCCHEN_SHIFT 22" D k2 f# ^/ Q9 A/ E$ X
#define ITCCHEN_SHIFT 23
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static volatile int irqraised1 = 0;5 J! d9 y$ }8 [" I0 ~' D" Y
static volatile int irqraised2 = 0;
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int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
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int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
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int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue); u" `2 @/ {& N$ R: E
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dma_addr_t dmaphyssrc1 = 0;) Q, \# n# ~8 p/ g$ Q
dma_addr_t dmaphyssrc2 = 0;4 ^( ^/ l+ N) [! g! j4 E2 |8 l
dma_addr_t dmaphysdest1 = 0;4 G4 u! D+ e* I. b) ~! r- r5 [
dma_addr_t dmaphysdest2 = 0;
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char *dmabufsrc1 = NULL;
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char *dmabufsrc2 = NULL;( B- P* A" {5 x* R) J8 n% |
char *dmabufdest1 = NULL;, {5 c* m A8 t% w
char *dmabufdest2 = NULL;
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static int acnt = 512; K: p& e" B9 N3 ~' e& T" ^+ l$ U0 {
static int bcnt = 8;# {$ p* G. M) k% g5 J) s
static int ccnt = 8;+ m) W' t/ W, E
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module_param(acnt, int, S_IRUGO);% z/ q3 M7 C& T2 W
module_param(bcnt, int, S_IRUGO);8 r3 y) {& d Q% {: O
module_param(ccnt, int, S_IRUGO);

复制代码

   这是在TI上找到的一个针对Davanci处理器简单的EDMA3驱动程序测试例程的一部分，我在编译的过程中是用
arm-none-linux-gnueabi-gcc  -I /home/tl/omapl138/linux-3.3/arch/arm/include -I /home/tl/omapl138/linux-3.3/include  EDMA3test.cpp -o EDMA3这个命令来链接库文件进行编译，但是报的错误特别多，我又试着一个函数一个函数往进加，仍然是很多错误。
   我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。

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[未解决] OMAPL138如何在Linux下使用EDMA3驱动